Peer administration on other port then MGMT

Hello FloRa ,

Thank you for reaching out to the community, just a question have you assigned any non-administrative users to the management port's subnet ?
Additionally, you can refer doc - How to configure management ports ?

Whats a "non-administrative user"? Unfortunately i can't find any information about that and it sound quite strange to "assign" a user to a subnet??

Hi FloRa,

Few questions

1. May I know the firmware version you are working on

2. HA was working earlier with the Port A interface(any changes made and now not working ) it is new setup?

3. Did you try with QuickHA mode and interactive mode and get the same mgmt port instead of Port A (LAN)?

4. Please share the current physical connection setup with firewalls.

5. Check HA logs

Check logs:

cat /log/msync.log | grep "ha:"

cat /log/applog.log | grep "ha:"

Quick link to setup HA : HighAvailablityStartupGuide

Regards

1. It's 19.5.3 MR-3-Build652

2. HA is working fine. I just can't select anything else then PrtgMGMT for peer administration. It's not a new setup. I just did not had the need to access the auxiliary device independently until now.

3.  I only do ionteractive mode, as QuickHA was a pain in previous versions. Never tried it again since v18 or something

4.  PortF1 and PortF2 are grouped to a LAG which is connected to our TOR-Switches. Physical LAG has no IP. We're only running VLANs on the LAG. Port 3 is HA. PortMGMT has an IP from a range that usually is beeing accessed via a transit VLAN on the LAG.

5. As said... HA is working fine. The problems are the following:

- I can't select any other interface then PortMGMT as peer administration. Probably because we only habe VLAN interfaces?? If this is the case, then please document it!

- PortMGMT is participating in routing, which should not be the case for a out-of-band management port. This is a design failure from sophos in my opinion. 

Hello FloRa,

Reg. your comments, please find my inputs.

- I can't select any other interface then PortMGMT as peer administration. Probably because we only habe VLAN interfaces?? If this is the case, then please document it!

That could be the case in your setup. Only physical, bridge and LAG type of ports are supported for peer administration. If you have any spare data port which can be configured for peer administration, it would be advisable. Otherwise as an admin, PortMGMT seems appropriate to me. I will check with documentation team internally and see if it can be included.

- PortMGMT is participating in routing, which should not be the case for a out-of-band management port. This is a design failure from sophos in my opinion.

I would say it's flexibility given to customer whether they want to use management port for routing traffic to Internet or internal networks based on the setup. Imagine, admin is only accessing PortMGMT and also accessing Internet (WAN port Port2, for example) via that port. In general, I agree that end users might be connected via LAN/DMZ data ports other than PortMGMT.

It makes sense to me that i am not able to select any other interface as peer administration since only "physical" ports are allowed. Thanks for this clarification. Eighter i has overseen this information in the documentation or it is not documented yet. 

However, the MGMTPort thing does not makes much sense for me. If the PortMGMT exactly behaves like all the other ports, why is it called PortMGMT? It does not gives me more flexibility at all, compared to just use any other physical port for the same purpose. As long as there is no workaround to prevent a Port from creating a kernel route, there does not seem to be a way to assign a management IP belonging to a subnet that already is accessible through another interface. So i guess in best practice here would eigther be to assign the MGMT IP to the physical LAG instead of a VLAN interface, or to use a completely different MGMT subnet assigned to another physical port. 

Yes, you have to use different subnet for MGMT port and other data ports. MGMT port is routable interface as I mentioned above.

Why is it called PortMGMT? - Because it's connected to host CPU (control/config plane) and not to network processor (NPU/data plane). Its main purpose is to manage the appliance via CLI/GUI.